Table 1 Summary characteristics (Mean ± SD) of Laysan and black-footed albatross foraging trips. To reduce the influence of individuals tracked for multiple foraging trips, a single trip per individual was randomly-selected for each reproductive stage to include in the calculation of mean values

Laysan albatross

Number of individuals tracked

58

38

26

Total number of foraging trips

72

40

153

Trip duration (days)

17.6 ± 7.45 ^a,*

2.62 ± 0.76^b

14.5 ± 3.91^c

Maximum distance from colony (km)

2433 ± 837^a

420 ± 266^b

2489 ± 676^a,*

Azimuth to most distant point from colony (°)

350 ± 26.5^a,*

35.4 ± 64.5^b

358 ± 32.4^a,*

Black-footed albatross

Number of individuals tracked

51

35

23

Total number of foraging trips

60

37

83

Trip duration (days)

13.3 ± 5.07^a,*

2.67 ± 0.87^b

14.4 ± 5.14^a

Maximum distance from colony (km)

2045 ± 1035^a

313 ± 144^b

2883 ± 998^c,*

Azimuth to most distant point from colony (°)

22.8 ± 32.5^*

47.4 ± 65.7

31.9 ± 35^*